用ps -def | grep查找进程很方便，最后一行总是会grep自己，
ps和grep查找消除grep自身查找
。$ ps -def | grep dragonfly-frameworkdean 5273 5272 0 15:23 pts/5 00:00:00 newlisp ./dragonfly-framework/newlisp-redirection.lsp -http -d 8080 -w .dean 5491 5229 0 15:37 pts/16 00:00:00 grep --color=auto dragonfly-framework$ ps -def| grep dragonfly-framework | grep -v grepdean 5273 5272 0 15:23 pts/5 00:00:00 newlisp ./dragonfly-framework/newlisp-redirection.lsp -http -d 8080 -w . ps -def | grep dragonfly-framework | grep -v grep | awk '{print $2}'5273